Elevator-gate



'2 Sheets-Sheet 1.

(No Model.)

.v E. PAULIN.

ELEVATOR GATE.

Patented Dec. 28, 1886..

Mtneaaes.

N. PEIER$ Phoiwmhngrapher. Washington. Dv C.

2 Sheets-Sheet 2.

(No Model) v. E. PAULIN.

ELEVATOR GATE.

No. 354,990. Patented Dec. 28, 1886.

Fya

Wit/leases.

NITED STATES PATENT Price.

VICTOR E. PAULIN, or ALLEGHENY CITY, PENNSYLVANIA.

ELEVATOR-GATE.

SPECIFICATION forming part of Letters Patent No. 354,990, dated December 28, 1886.

Application filed May 7, 1886. Serial No. 201.431. (No model.)

To all whom it may concern:

Be it known that I, VIoToR E. PAULIN, of Allegheny City, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement inGates for Elevators; and I do hereby declare the following to be afull, clear, and exact description thereof.

My invention relates to an improvement in that class of self opening and closing elevatorgates which move up and down in vertical grooves in front of the hatchway, and are operated by the rise and descent of the elevatorcar; and it has for its object to improve the mechanism of such devices and to simplify their action.

v Myimprovement is illustrated in the accompanying drawings, in which- Figure 1 is a front elevation of the floor of an elevator-car, shown in connection with the safety-gate, the walls of the elevator-shaft being in vertical section. Fig. 2 is a plan view of Fig. 1. view of'a part. Fig. 4 is a perspective view of a modified form of gate.

Like symbols of reference indicate like parts in each.

In the drawings, 2 is the platform of the car, which is mounted between upright posts 3, and is raised and lowered by cables in the usual way.

4 is one of the floors of the building, at which there is a landing for the elevator. 5 is the safety-gate, arranged in vertical slideways 20, which extend both above and below the floor 4 in the elevatorshaft. The gate is provided with ropes 6, which extend from the'bottom of the gate over sheaves 7, and are attached to a weight, 8, which normally keeps the gate elevated to cut off entrance from the landing 4 to the elevator shaft, as shown by full lines in Fig. 1.

At the front of the car-bottom 2 is a bar, 9, which is arranged on the car-bottom so as to slide lengthwise transversely of the cari. -e., in a direction lengthwiseof thegate 5. A suit' able spring, 10, which bears against the bar 9, tends to force it in the direction of the arrow to.

11 are lugs projecting from the bar 9, and situate so that they shall engage corresponding lugs, 12, on the gate 5 as the car descends.

13 is a cam boss or plate fixed to the side of Fig. 3 is a detached perspective the elevator-shaft, and arranged to engage the end of the bar 9 when it passes the cam. 4

The operation is as follows: Suppose the car to be descending. When in its descent 5 the bottom of the car comes opposite to the top rail of the gate 5, the lugs 11 will engage the lugs 12 on the gate and will push the gate down, so that when the car reaches the land- 7 ing 4 the gate will have been pushed down in 6 its slideways to the position shown in dotted lines in Fig. 1, thus leaving the entrance to the car unobstructed. As the car passes the floor 4 the end of the bar 9 will engage the camboss 13, which is situate at or about the floor-level, 6 and will bepushed thereby in the direction of the arrow 1). This motion of the bar will disengage the lugs 11 and 12, and will release the gate, whereupon the weight 8 will automatically elevate it again to its original position to close the entrance to the elevator-shaft.

In order to operate the gate on the rise of the car I use the following mechanism: On the bottom of the car is a pivoted latchor dog,

14, which is provided with a spring, 15, which 7 5 bears on the dog, so that normally it holds it in such position that it shall engage a lug, c,

on the side of the weight 8. When the car rises on its approach to thelanding 4, the dog 14, engaging the lug 0, will raise the weight 8, and thus removing its gravity force from the gate 5 will cause the latter to drop and leave the entrance to the car from the landing free.

As the car passes the landing the latch en- I gages a fixed cam, 15, which, moving the latch away from the car, as shown in dotted lines in Fig. 2, will disengage it from the weight and will allow the latter to drop, so. as to raise the gate again to its normal position. The sides of the lugs 11 and 12 are beveled, so that on 0 the descent of the car they will pass each other without engagement, the only effect of their meeting being to move the spring-bar9slightly. The lug c of the weight 8 is also beveled, so

that the latch 14 will pass it on the descent of 5 the car.

My improvement is useful on account of its simplicity and certainty of action. Its principal feature of advantage is that the gate 5 moves downward out of the way of the car,

instead of being lifted up, so that it does not at all obstruct the entrance to the elevator vatorshaft.

when the latter is at the landing. It also obviates the necessity for the unsightly and inconvenient vertical guide-posts extending above the floor, which are used for gates which rise instead of descending.

The operation of the gate when constructed as shown in the drawings is such that at no time is the passage to the elevator-shaft left open, for as the gate descends the car immediately takes its place.

In the modification shown in Fig. 4 the gate is not provided with, devices for automatically operating it by means of the car, but is worked by hand. In this figure the dotted line 4 indicates the floor-level. 20 are the guide posts, between which the gate is mounted. 8 is a weight tending to raise the gate to the position in which it is shown, so as to close the ele- 16 is a spring-latch operated by a pull-handle, '17, and arranged to engage a spring-lug, 18, on the gate when it is raised, and to uphold the gate to prevent it being pushed down accidentally, as by a person leaning upon it; and 19 is a spring lug on the top rail of the gate, which is engaged by the latch 16 when the gate is down, to prevent the weight from raising it. With this form of gate, when the elevator-car reaches the landing, the operator pulls the handle 17 to disengage the latch 16, and pushes the gate down in its slideways below the floor until the latch engages the lug 19. On the car leaving the floor the operator again pulls the handle 17. This disengages the latch and suffers the weight 8 to lift the gate to its normal position, where itis again automatically locked by the latch 16 and lug 18.

I'am aware that sliding gates moving vertically, one portion upward and the other downward, are not new, and I do not desire to claim the same, as one of the objects of my invention is to prevent the passage of the gates in front of the doorway of the car in the descent thereof, and thereby obviate the danger of accidents, which are otherwise liable to occur.

I am also aware that weights, cams, and springs have been used in prior devices employed in raising and lowering elevatorgates,

it is movable beneath the elevator-landing from a position in front thereof, a springactuated bar on the car arranged relatively to the gate, so that it shall engage the gate on the descent of the car and shall move it downward, and a cam arranged in the path of the spring-actuated bar for moving the same and disengaging it from the gate, substantially as and for the purposes described.

3. The con1bination,with an elevator-car, of a gate arranged in vertical slides, wherein it is movable beneath the elevatorlanding, a weight for supporting the gate, and a latch or dog on the car, arranged relatively to the weight, so that it shall engage the weight on the ascent of the car and shall lift the weight to cause the descent of the gate, substantially as and for the purposes described.

- 4. The combination,with an elevator-car, of a gate arranged in vertical slides wherein it is movable beneath the elevator-landing from a position in front thereof, a weight for sup porting the gate, a spring-actuated latch or dog on the tear arranged relatively to the weight, so that it shall engage the weight on the ascent of the car and shall lift the weight to cause the descent of the gate, and a cam for disengaging the latch from the weight, substantially as and for the purposes described.

In testimony whereof I have hereunto set my hand this 3d day of May, A. D. 1886..

' VICTOR E. PAULIN.

Vitnesses:

W. B. CoRwIN, THOMAS W. BAKEWELL. 

